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Hitch connections between tractive vehicles and devices trailed thereby using power means for lifting a coupling element

US 2,805,083 A · Inventors: THEO SHERWEN

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Listed from its USPTO record in Patent Yard's full-term archive. Its claims, description and drawings are in the USPTO PDF and on Google Patents, and the Claude kit works from them.

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Why it's free to use

  • Granted September 3, 1957. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by September 3, 1974.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledDecember 3, 1948
GrantedSeptember 3, 1957
Term endedSeptember 3, 1974
Application number—
Classification (CPC)B60D1/36
Length13 pages

Timeline

Timeline From USPTO dates

194919521955195819611964196719701973Application filedDec 3, 1948Patent grantedSep 3, 1957Term endedSep 3, 1974

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Official USPTO records

Full published documentText and every drawing sheet as a PDF.USPTOFile historyStatus, office actions, notices, fee records and petitions.USPTO Patent CenterPatent Public Search recordSearchable full text and bibliographic data.USPTO

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Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comJustia PatentsFull text, claims and classification.patents.justia.comFreePatentsOnlineFull text and PDF.freepatentsonline.comEspacenetForeign family and legal status.European Patent Office

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